fix: add types export definition for lib/locales/*

This change fixes an issue that prevented Zod from being build and
served through the Skypack CDN. Namely, Skypack was unable to resolve
the declaration file `lib/locales/en.d.ts` because it was not exposed by
the `exports` definition in `package.json`.

package.json

@@ -53,7 +53,10 @@
 			"import": "./lib/index.mjs"
 		},
 		"./package.json": "./package.json",
-		"./locales/*": "./lib/locales/*"
+		"./locales/*": {
+			"types": "./lib/locales/*.d.ts",
+			"require": "./lib/locales/*.js"
+		}
 	},
 	"bugs": {
 		"url": "https://github.com/colinhacks/zod/issues"